So tired all the time

Gina
No joke, ALL THE TIME. I thought maybe I wasn't getting enough sleep, or too much sleep. But now that I've been tracking, I've found that I usually sleep between 6-9 hours a night, completely normal. So why do I want to do nothing but sleep all day every day? If it helps, I take Protonix for GERD and Celexa for depression/anxiety.